Bert:
Because I was afraid to speak
When I was just a lad
My father gave me nose a tweak
And told me I was bad
But then one day I learned a word
That saved me achin' nose

Both:
The biggest word I ever heard
And this is how it goes,
Oh:
Supercalifragilisticexpialidocious!
Even though the sound of it
Is something quite atrocious
If you say it loud enough
You'll always sound precocious
Supercalifragilisticexpialidocious!
Um diddle diddle diddle um diddle ay
Um diddle diddle diddle um diddle ay!

Mary:
He traveled all around the world
And everywhere he went
He'd use his word and all would say
"There goes a clever gent."

Bert:
When Dukes and maharajas
Pass the time of day with me
I say me special word and then
They ask me out to tea

Bert (spoken): Here we go! Supercalifragilisticexpialidocious!
Even though the sound of it is something quite atroscious!
If you say it loud enough, you'll always sound precocious,
Supercalifragilistic-